Electric Power

  • Specs Summary
  • Rating Range
    Switch Dependent
  • Transfer Type
    Application Dependent
  • Switch Type
    Application Dependent
  • Control Power

MX350 Controller

The MX350 controller is specifically designed for low voltage Automatic Transfer Switch (ATS) applications. The flexible control and communications options are ideal for any application. Integrated push buttons, graphical controls and LED indicators reduce external components and wiring in addition to providing local control and access to system information. Multiple communication protocols allow simple integration into monitoring and control systems.

Technical Summary

  • Rating Range Switch Dependent
  • Transfer Type Application Dependent
  • Switch Type Application Dependent

Electrical Ratings

Controller Specifications

  • Source Sensing 120 - 690 VAC +/- 1% of nominal voltage (+/- .05 Hz, +/-.5 A)
  • Control Power 120 VAC
  • Communications Interface (optional) Serial RS-485 upt to 115.2 Kbps or TCP/IP (10/100 base-T)
  • Undervoltage dropout for source 1 and source 2 75-99% of nominal
  • Undervoltage restore for source 1 and source 2 85-100% of nominal
  • Underfrequency dropout for source 1 and source 2 45 - 59.9 Hz
  • Underfrequency restore for source 1 and source 2 45 - 59.5 Hz
  • Overvoltage dropout for source 1 and source 2 105 - 110% of nominal
  • Overvoltage restore for source 1 and source 2 103 - 108% of nominal
  • Overfrequency dropout for source 1 and source 2 50.1 - 63 Hz
  • Overfrequency restore for source 1 and source 2 50 - 62.9 Hz
  • Voltage unbalance on dropout for source 1 and source 2 5 to 20% of nominal
  • Voltage unbalance for restore for source 1 and source 2 4 to 19% of nominal
  • Load control relay contacts rated for 10A @ 24VDC or 120VAC
  • Load control relay contacts 0-259 minutes
  • Delay for engine cool down (U) 0-60 minutes
  • Delay transfer to nonpreferred source (W) 0-5 minutes
  • Delay NeutralTransition time delays (DT,DW) 0-10 minutes
  • Storage temperature (-40˚C - 90˚C )
  • Operating temperature (ambient) (-20˚C to 50˚C)

Standard Equipment

The Cat MX350 Controller for the CTE Series ATS

Status LEDS for:

  • Source 1 and 2 Availablity
  • Source 1 and 2 Connected
  • Transfer Inhibit
  • Active Alarms
  • Time Delay Active

Graphical Display:

  • Color graphical display with USB Calibration/programming port and Embedded Help
  • Displays 256 time-tagged events with 1 ms resolution
  • Provided detailed outage,test,and diagnostic reports
  • Monitors over/under frequency, voltage conditions, frequency imbalance, and phase rotation

Ranges of Controls / Metering:

  • Neutral, Engine Start, and Engine stop time delay timers
  • Contacts for Source 1 and Source 2 position indication as well as remote load test signals, and engine start delay
  • Synchroscope
  • Programmable generator exerciser
  • Source 1 and Source 2 In-phase monitor

Testing and Certification

  • Tested in accordance with: <br>IEC 60068-2-30<br>IEC 60068-2-1<br> IEC 60068-2-2<br> IEC 60255-22-1<br>IEC 60255-22-2<br>IEC 60255-22-3<br>IEC 60255-22-4<br>IEC 60255-22-5<br>IEC 60255-22-6<br>IEC 60255-25<br>IEC 60529; IP54 (front),IP20(back)<br>IEC 61000-4-11
  • Conforms to EN 60947-1, EN 60947-6-1, EN 60255-26 (EN 50263), EN 5502 / CISPR22 / EN 61000-6-2 / EN 61000-6-4
  • Quality System:<br>Manufactured under an ISO 9001 Registered Program

Optional Equipment

MX350 Option Packages

Option Package A:

  • Full function ATS control with full sensing and control capabilities
  • Expanded diagnostics, high-speed 256 event capture, 365 days
  • Monitoring Software (local or remote), USB interface for uploading and downloading setup parameters
  • Four (4) programmable inputs and four (4) outputs assignable to additional ATS features
  • Full complement of programmable ATS control switches AUTO / MAN, Preferred Source selector,Commit / No Commit Xfer, Transition Mode Select for Closed Transition switch models)

Option Package B:

  • Includes Option Package A features, plus
  • Ten (10) customer programmable digital and ten (10)analog alarms.
  • Twenty (20) channel data logger, customer configurable sample period from one (1) cycle to sixty (60) minutes.
  • Waveform capture, ten (10) channels, up to 256 cycles each sixteen (16) samples / sec.
  • Auto Load Shed with voltage, frequency and kW triggers.

Option Package C:

  • Includes Option B features, plus
  • Four (4) additional inputs and outputs (totaling eight (8) in & eight (8) out)

Option Package D:

  • Includes Option Package C features, plus
  • Four (4) additional inputs and outputs (totaling twelve (12) in & twelve (12) out)
  • Customized user control logic

Option Package M:

  • Configuration for Manual Operation only (Non-Automatic)